Troi suggests that there could be a cloaked Romulan base on Galornden Core in this episode. Yet in "The Defector" Data says that a cloaked base on the surface would be visible due to the distortion of the background, and in "The Enemy" we find that the magnetic fields on Galornden Core would rapidly become fatal for Humans and Romulans. Guess Troi should stick to the day job.

Also, it was nice of Sela to lock Data, Spock and Picard in her office without any kind of guard so that they could plan their escape and use her computer system to foil her entire plan, wasn't it?

And finally, the job descriptions get all mixed up towards the end of this one. Crusher announces that she has recieved a distress call from a nearby colony, and Riker responds by ordering LaForge to set a course for it. Since when do Doctors handle communications and Engineers handle the helm?

Great Moment :

The mind meld between Spock and Picard, to allow Spock to touch the part of Sarek's mind left from the previous meld between him and Picard.

Body Count :

The crew of the smuggler ship was killed when the Enterprise destroyed it. Over two thousand Romulan troops were killed when the Warbird destroyed their invasion fleet.

Factoid :

Filming on the second part of this episode was completed before part one, to fit in with Leonard Nimoy's schedule.

Plotline

Picard learn the real reason for Spock's presence on Romulus; meanwhile Riker uncovers a plot that threatens the very existence of the Federation.